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Jpeg2000 16Bit import error (and alpha Channel)


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Hi,

I ran unto an odd Bug. Jpeg2000 files with 16bit are opened but rendert wrong.

jpeg_affinity_photo_1.8.3_.jpeg

They should look like this:

jpeg_referenz.jpg

 

8bit jp2 files are imported correct though they are imported without the alpha Chanel :(

 

Sample Files:

https://www.dropbox.com/t/PTG8RWGO2NGwxCcf

http://www.lichtsch.eu/affinity_photo_jp2_bug/jpeg2000_16bit_lossless_with_alpha.jp2

http://www.lichtsch.eu/affinity_photo_jp2_bug/jpeg2000_16bit_lossless_without_alpha.jp2

http://www.lichtsch.eu/affinity_photo_jp2_bug/jpeg2000_8bit_lossless_with_alpha.jp2

http://www.lichtsch.eu/affinity_photo_jp2_bug/jpeg2000_8bit_lossless_without_alpha.jp2

the Files are created with Blackmagic Fusion using the ffmpeg extension so i guess it would also apply to any files that use the ffmpeg or openjpeg 2000 library

 

best regards,

Elmar

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